CN113606756A - Natural cold source cooling and heat exchanging device for transformer substation and control method thereof - Google Patents
Natural cold source cooling and heat exchanging device for transformer substation and control method thereof Download PDFInfo
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- CN113606756A CN113606756A CN202110422628.0A CN202110422628A CN113606756A CN 113606756 A CN113606756 A CN 113606756A CN 202110422628 A CN202110422628 A CN 202110422628A CN 113606756 A CN113606756 A CN 113606756A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001816 cooling Methods 0.000 title abstract description 18
- 238000004378 air conditioning Methods 0.000 claims abstract description 15
- 238000005057 refrigeration Methods 0.000 claims abstract description 15
- 238000012546 transfer Methods 0.000 claims description 14
- 239000003570 air Substances 0.000 description 18
- 238000009423 ventilation Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a natural cold source cooling heat exchange device for a transformer substation and a control method thereof, wherein the heat exchange device is a double-loop heat exchange device, a first loop is a refrigeration air-conditioning circulation pipeline, a second loop is a heat pipe heat exchanger circulation pipeline, the pipelines of the first loop and the second loop are mutually independent, and meanwhile, the pipelines of the first loop in a first part of an indoor side heat exchanger and a first part of an outdoor side heat exchanger and the pipelines of the second loop in a second part of the indoor side heat exchanger and a second part of the outdoor side heat exchanger share a fan and heat exchanger fins.
Description
Technical Field
The invention relates to the field of transformer substation devices, in particular to a heating, ventilating and air conditioning system of a transformer substation.
Background
Along with the rapid development of national power grids, the number of transformer substations is continuously increased, the form and the function of the transformer substations are gradually enriched, natural ventilation or fan natural ventilation is mostly adopted for heat dissipation and cooling of conventional space in the transformer substations, the overhigh temperature of equipment is prevented, for example, CN 110880703A designs a ventilation and cooling fan applied to the transformer substations, the air quantity of each pipeline is adjusted through the control of internal multi-pipeline ventilation, the temperature in the transformer substations is conveniently controlled, and the purpose of saving energy is realized. However, for spaces such as a main control room, a capacitor room, a secondary room and the like in a transformer substation, direct introduction of outdoor air cannot ensure indoor air quality, and the problems of dust deposition and the like during too long operation time are not favorable for safe operation of equipment and a system, so that a heat exchange device or a split air conditioner is often adopted. For example, CN 109140681a proposes an energy-saving management system for air conditioners in a substation, which reduces energy consumption of an air conditioning system while ensuring temperature requirements in the substation; CN 105066273 provides a heat transfer device suitable for condenser room, make full use of ambient air nature cold source cools down for the station interior equipment has a good operational environment, but when indoor outer difference in temperature is less, the device probably can not guarantee completely that indoor temperature does not exceed standard upper limit.
Therefore, the prior art lacks a heat exchange device which can ensure that the temperature in the station is within the standard requirement under various weather conditions and reduce the operation energy consumption.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a natural cold source cooling and heat exchanging device for a transformer substation, which is characterized in that: the heat transfer device is a double-loop heat transfer device, wherein:
the first loop is a refrigeration air-conditioning circulating pipeline which is formed by sequentially connecting a compressor, a first part of an indoor side heat exchanger, a throttle valve and a first part of an outdoor side heat exchanger in series;
the second loop is a heat pipe heat exchanger circulating pipeline which is formed by sequentially connecting a second part of the indoor side heat exchanger and a second part of the outdoor side heat exchanger in series;
the pipelines of the first loop and the second loop are independent from each other, and meanwhile the pipelines of the first loop in the first part of the indoor side heat exchanger and the first part of the outdoor side heat exchanger and the pipelines of the second loop in the second part of the indoor side heat exchanger and the second part of the outdoor side heat exchanger share a fan and heat exchanger fins.
And the signal output end of the control system is connected with the compressor and the heat exchanger fan to control the rotating speed of the compressor and the rotating speed of the fan.
Further, the piping in the first loop in the first section of the indoor side heat exchanger and the first section of the outdoor side heat exchanger share a common heat exchanger housing.
Further, the second loop shares a heat exchanger housing with piping in the second section of the indoor side heat exchanger and the second section of the outdoor side heat exchanger.
Furthermore, the pipelines of the first loop in the first part of the indoor side heat exchanger and the first part of the outdoor side heat exchanger are arranged in a staggered mode in sequence.
Furthermore, the pipelines of the second loop in the second part of the indoor side heat exchanger and the second part of the outdoor side heat exchanger are arranged in a staggered mode in sequence.
The invention also provides a control method of the heat exchange device, which is characterized in that: the method comprises the following steps:
s1: obtaining a return value of signals of the indoor and outdoor temperature detectors;
s2: the following judgment and decision process is carried out:
when the indoor and outdoor heat transfer temperature difference is larger than a target value, the rotating speed of the compressor is reduced, the heat pipe heat exchanger mainly provides cold energy to the indoor space, and the temperature in the transformer substation is controlled by adjusting the wind speed of a fan of the heat exchanger;
when the indoor and outdoor heat transfer temperature difference is smaller than a target value, the rotating speed of the compressor is increased, the refrigeration air-conditioning circulating pipeline is mainly used for providing cold energy to the indoor space, and the temperature in the transformer substation is controlled by adjusting the wind speed of a fan of the heat exchanger.
The invention can realize the following technical effects:
(1) this natural cold source heat transfer device that cools down for transformer substation adopts the dual loop design, can effectively utilize ambient air to carry out the nature cooling, and the efficiency level is high to when outdoor temperature is higher, also can the abundant control station internal temperature.
(2) The indoor and outdoor heat exchanger designs of the invention are applied to the transformer substation, and the humidity and the air quality of outdoor air and the humidity and the air quality of indoor air are mutually independent, thereby ensuring the safe operation of power equipment in the substation.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are needed in the embodiments or the prior art descriptions will be briefly described below.
Fig. 1 is a schematic diagram of a system principle of a natural cold source cooling and heat exchanging device for a transformer substation provided by the invention;
fig. 2 is a schematic view of the overall structure of an indoor side/outdoor side heat exchanger of a natural cold source cooling and heat exchanging device for a transformer substation provided by the invention;
fig. 3(a) is a schematic structural diagram-front view of a coil and fins of an indoor/outdoor heat exchanger of a natural cold source cooling and heat exchanging device for a transformer substation according to the present invention;
fig. 3(b) is a schematic structural diagram of a coil and fins of an indoor/outdoor heat exchanger of a natural cold source cooling and heat exchanging device for a transformer substation-left view;
fig. 3(c) is a schematic diagram of a coil and a fin structure of an indoor side/outdoor side heat exchanger of a natural cold source cooling and heat exchanging device for a transformer substation-right side view.
Reference numerals: 1-heat exchanger box body, 2-heat exchanger air inlet, 3-heat exchanger air outlet, 4-heat exchanger fan, 5-heat exchanger coil and fin structure, 6-fin fixing support, 7-refrigeration air-conditioning circulation pipeline refrigerant inlet, 8-refrigeration air-conditioning circulation pipeline refrigerant outlet, 9-heat pipe working medium inlet, 10-heat pipe working medium outlet, 11-straight pipe, 12-connecting bent pipe
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings, which are provided solely for a better understanding of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the patented embodiments of the invention without any inventive step, are within the scope of protection of the invention.
In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second," if any, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The embodiment discloses a natural cold source cooling heat exchange device for a transformer substation, wherein the heat exchange device is a double-loop heat exchange device, which is specifically described below with reference to fig. 1 to 3. Wherein:
the first loop is a refrigeration air-conditioning circulating pipeline which is formed by sequentially connecting a compressor, a first part of an indoor side heat exchanger, a throttle valve and a first part of an outdoor side heat exchanger in series;
the second loop is a heat pipe heat exchanger circulating pipeline which is formed by sequentially connecting a second part of the indoor side heat exchanger and a second part of the outdoor side heat exchanger in series;
the pipelines of the first loop and the second loop are independent from each other, and meanwhile the pipelines of the first loop in the first part of the indoor side heat exchanger and the first part of the outdoor side heat exchanger share the fan 4 and the heat exchanger fins with the pipelines of the second loop in the second part of the indoor side heat exchanger and the second part of the outdoor side heat exchanger.
Specifically, heat transfer device still includes control system and indoor outer thermodetector, and indoor outer thermodetector signal transmission is to control system, and control system's signal output part connects compressor and heat exchanger fan for control compressor rotational speed and fan rotational speed.
In particular, as shown in fig. 2, the piping in the first loop within the first section of the indoor side heat exchanger and the first section of the outdoor side heat exchanger share a common heat exchanger housing. The second loop shares a heat exchanger housing with the piping in the second section of the indoor side heat exchanger and the second section of the outdoor side heat exchanger.
As shown in fig. 3, the first loop circuit is arranged with the pipes in the first section of the indoor side heat exchanger and the first section of the outdoor side heat exchanger staggered in sequence. And pipelines of the second loop in the second part of the indoor side heat exchanger and the second part of the outdoor side heat exchanger are sequentially arranged in a staggered mode.
The indoor side heat exchanger, the compressor, the throttle valve, the indoor temperature detector and other components are uniformly distributed in the station, and the outdoor side heat exchanger and the outdoor temperature detector are arranged outdoors. In the heat exchanger box body, a fan 4 is arranged on the right side, a composite structure 5 of a coil pipe and fins is arranged on the left side, and the fan adjusts the rotating speed according to signals of a control system. The composite structure of the coil and the fins is shown in detail in fig. 3, a refrigeration air-conditioning pipeline (a solid line pipeline) and a heat pipe heat exchanger pipeline (a dotted line pipeline) are mutually independent, and the pipelines are arranged in a crossed structure, so that uniform heat exchange of the fins is realized.
Under a common working condition, both the refrigeration air-conditioning system and the heat pipe exchanger are in a running state, the refrigeration system realizes the transportation of heat from the indoor side to the outdoor side by applying work through a compressor, the indoor air realizes the heat exchange through an evaporator under the suction force of a fan, the temperature is reduced, and similarly, the outdoor air discharges the heat through a condenser; for a heat pipe circulation pipeline, after entering a heat exchanger from an air inlet, indoor air exchanges heat with phase-change working medium in a coil pipe to absorb heat, is heated and gasified, enters an outdoor heat exchanger through a communication pipeline, exchanges heat with outdoor air to release heat, condenses and returns to the indoor side, so that heat is transported from indoor to outdoor in the past, and under the combined action of the two systems, the purpose of reducing the temperature in a station is achieved.
When the outdoor temperature is high and the indoor and outdoor temperature difference is small, the heat pipe heat exchanger does not have obvious indoor cooling effect, and the cooling and refrigeration are mainly carried out by depending on a refrigeration air-conditioning system. At this time, the control system gives out an instruction according to the return value of the indoor and outdoor temperature detectors, increases the rotating speed of the compressor of the refrigerating system, and increases the refrigerating capacity, so as to realize the control of the indoor temperature. When the outdoor temperature is low and the indoor and outdoor temperature difference is large, outdoor low-temperature air is fully utilized for cooling, the heat pipe heat exchanger plays a leading role, the control system reduces the rotating speed of the compressor according to the return value of the indoor and outdoor temperature detectors, even closes the refrigeration air-conditioning system, and completely depends on the heat pipe heat exchanger for cooling, and the heat exchange quantity is adjusted by adjusting the rotating speed of the fan of the indoor and outdoor heat exchangers.
The cooling and heat exchanging device can fully utilize a natural cold source to cool, reduce the power consumption of a system, ensure the safe operation of equipment in a station and improve the quality of air in the station.
Example 2
This embodiment discloses a control method of the heat exchange device according to embodiment 1, the method includes the following steps:
s1: obtaining a return value of signals of the indoor and outdoor temperature detectors;
s2: the following judgment and decision process is carried out:
when the indoor and outdoor heat transfer temperature difference is larger than a target value, the rotating speed of the compressor is reduced, the heat pipe heat exchanger mainly provides cold energy to the indoor space, and the temperature in the transformer substation is controlled by adjusting the wind speed of a fan of the heat exchanger;
when the indoor and outdoor heat transfer temperature difference is smaller than a target value, the rotating speed of the compressor is increased, the refrigeration air-conditioning circulating pipeline is mainly used for providing cold energy to the indoor space, and the temperature in the transformer substation is controlled by adjusting the wind speed of a fan of the heat exchanger.
The above embodiments are only used for explaining the present invention, and the structure, connection mode, manufacturing process, etc. of the components may be changed, and all equivalent changes and modifications performed on the basis of the technical solution should not be excluded from the protection scope of the present invention.
Claims (7)
1. The utility model provides a transformer substation is with natural cold source heat transfer device that cools down which characterized in that: the heat transfer device is a double-loop heat transfer device, wherein:
the first loop is a refrigeration air-conditioning circulating pipeline which is formed by sequentially connecting a compressor, a first part of an indoor side heat exchanger, a throttle valve and a first part of an outdoor side heat exchanger in series;
the second loop is a heat pipe heat exchanger circulating pipeline which is formed by sequentially connecting a second part of the indoor side heat exchanger and a second part of the outdoor side heat exchanger in series;
the pipelines of the first loop and the second loop are independent from each other, and meanwhile the pipelines of the first loop in the first part of the indoor side heat exchanger and the first part of the outdoor side heat exchanger and the pipelines of the second loop in the second part of the indoor side heat exchanger and the second part of the outdoor side heat exchanger share a fan and heat exchanger fins.
2. The heat exchange device of claim 1, wherein: the indoor and outdoor temperature detectors transmit signals to the control system, and the signal output end of the control system is connected with the compressor and the heat exchanger fan and used for controlling the rotating speed of the compressor and the rotating speed of the fan.
3. The heat exchange device of claim 1, wherein: the piping in the first loop within the first section of the indoor side heat exchanger and the first section of the outdoor side heat exchanger share a common heat exchanger shell.
4. The heat exchange device of claim 1, wherein: the second loop shares a heat exchanger housing with the piping in the second section of the indoor side heat exchanger and the second section of the outdoor side heat exchanger.
5. The heat exchange device of claim 1, wherein: and pipelines of the first loop in the first part of the indoor side heat exchanger and the first part of the outdoor side heat exchanger are sequentially arranged in a staggered mode.
6. The heat exchange device of claim 1, wherein: and pipelines of the second loop in the second part of the indoor side heat exchanger and the second part of the outdoor side heat exchanger are sequentially arranged in a staggered mode.
7. A method for controlling a heat exchange apparatus according to claim 1, characterized in that: the method comprises the following steps:
s1: obtaining a return value of signals of the indoor and outdoor temperature detectors;
s2: the following judgment and decision process is carried out:
when the indoor and outdoor heat transfer temperature difference is larger than a target value, the rotating speed of the compressor is reduced, the heat pipe heat exchanger mainly provides cold energy to the indoor space, and the temperature in the transformer substation is controlled by adjusting the wind speed of a fan of the heat exchanger;
when the indoor and outdoor heat transfer temperature difference is smaller than a target value, the rotating speed of the compressor is increased, the refrigeration air-conditioning circulating pipeline is mainly used for providing cold energy to the indoor space, and the temperature in the transformer substation is controlled by adjusting the wind speed of a fan of the heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110422628.0A CN113606756A (en) | 2021-04-16 | 2021-04-16 | Natural cold source cooling and heat exchanging device for transformer substation and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110422628.0A CN113606756A (en) | 2021-04-16 | 2021-04-16 | Natural cold source cooling and heat exchanging device for transformer substation and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113606756A true CN113606756A (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110422628.0A Pending CN113606756A (en) | 2021-04-16 | 2021-04-16 | Natural cold source cooling and heat exchanging device for transformer substation and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113606756A (en) |
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2021
- 2021-04-16 CN CN202110422628.0A patent/CN113606756A/en active Pending
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